Using the Symbols +, −, and 0 to Indicate Interspecific

question 60

Multiple Choice

Using the symbols +, −, and 0 to indicate interspecific species interactions, where the first symbol refers to the first organism mentioned, which interactions of the following would exist between a lion pride and African wild dogs, if the dogs are the lions' prey and are found to typically avoid areas with lions?

• A) +/+
• B) +/−
• C) 0/0
• D) −/−

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Definitions:

Long-run Cost Function

The relationship between output quantity and total cost when all inputs, particularly capital, can be varied to minimize cost.

Marginal Cost Curve

A graphical representation showing how the cost of producing one more unit changes with increased production.

Lease Price

The amount of money paid for the temporary use of a good, property, or piece of equipment.

Optimal Output

The level of production that maximizes a firm's profit or minimizes its cost under given conditions.